Used for various telephone systems Specifications:1) 0.4mm, 0.5mm, 0.6mm, 0. ... , tinned copper, steel clad copper b) Insulation: PE, PP, PVCc) Screening: aluminum foil, earth wire or no screeningd) Jacket: LDPE, PVC,4 ... ) All colors available5) Round and Flat available6) Customized specifications and lengths accepted Telephone Wire